Add navigation destination text entity to Tessie docs

[Mattheinrichs]

Proposed change

Document the new text platform entity added in home-assistant/core#169155.

Adds:

• Text to ha_category and ha_platforms frontmatter
• A new bullet under "Vehicle control" in "How you can use this integration"
• A new ### Text section in Vehicle entities documenting the Navigation destination entity

Type of change

• Update existing documentation
• Document new feature

Additional information

• Companion code PR: Add navigation destination text entity to Tessie integration core#169155

[home-assistant]

It seems that this PR is targeted against an incorrect branch since it has a parent PR on one of our codebases. Documentation that needs to be updated for an upcoming release should target the next branch. Please change the target branch of this PR to next and rebase if needed.

[netlify]

✅ Deploy Preview for home-assistant-docs ready!

Name	Link
🔨 Latest commit	ce28c26
🔍 Latest deploy log	https://app.netlify.com/projects/home-assistant-docs/deploys/69ececd8ad8b200009183483
😎 Deploy Preview	https://deploy-preview-45007--home-assistant-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[Copilot]

Pull request overview

This PR updates the Tessie integration documentation to reflect the newly added text entity platform for sending a navigation destination to a Tesla vehicle, aligning the docs with the companion Home Assistant Core change.

Changes:

• Add Select, Switch, and Text to ha_category, and add text to ha_platforms front matter.
• Update the “Vehicle control” list to include sending a navigation destination to the vehicle.
• Document the new Vehicle entity type section for Text, including the Navigation destination entity.